Drilling-machine.



l.. GARRISON.

DRILLING MACHINE.

APPLICATION FILED IuLv I, 1912. IIENIzwEIJ Dsc. 3,1914.

1,146,241 PaIenIedJu1y13,1915.

2 SHEETS-SHEET l.

IIIIIIII WITJVESSES [NI/ENTOR A ui uw GLAS L LOYD lGAIzFzIa-IOIN' /M m1, Afm@ L. GARRISON.

DRILLING MACHINE.

APPucATIoN FILED JuLY1, 1912. RENEwED DEC. 3,1914.

Patented July 13, 1915.

2 SHEETS-SHEET 2 WIT/1155555 `[Alifax/'T012 LLOYD GmaRxsoN CGLUMBIA PLANDORAPN C0.. WASHINGTDN, D. C.

LLoYD GARnIsoN, on PORTLAND, OREGON.

DRILLING-MACHINE.

Specification of Letters Patent.

1,146,243. Patented July 13, 1915.

Application sied Ju1y1, 1912, serial No. 707,035.

. in ceilings, concrete structures and the like.

One of the principal objects of this invention is the production of an efcient standard which may be adjusted' vertically to different height ceilings whereby the drill mechanism may be efficiently operated.

Another object of this invention is the production of an eicient mechanism whereby a considerable amount of leverage may be obtained for causing the drill to'be struck a severe blow whereby the drill may be etliciently driven into very hard substances.

With these and other objects in view, the invention consists in general of certain combinations and arrangements of parts as will be hereinafter fully described, illustrated in the accompanying drawings, and specifically claimed.

In the drawings, Figure 1 is a side elevation of the drill. Fig. 2 is a rear elevation of a portion of the standard. Fig. 3 is a side elevation partly in section of the lower por-` tion of the standard. Fig. 4 is an enlarged side elevation partly in section of the upper portion of the standard. Fig. 5 is an enlar-ged sectional View of the spring connection for the hammer throwing rod. Fig. 6 is a side elevation partly in the section of the connecting mechanism for the sections of the hammer throwing rod. Fig. 7 is a section taken on line 77 of Fig. 6. Fig. 8 is vertical section through the drill supporting member of the standard. Fig. 9 is a section taken on line 9-9 of Fig. 5. Fig. 10 .is a detailed perspective of the foot operating lever. Fig. 11 is a detailed perspective of one end of one of the sections of the lever throwing rod.

By referring to the drawings by numerals, it will be seen that l designates the base which supports the primary portion 2 of the standard, and this primary portion 2 is threaded into the collar portion 3 of the base l. The base 1 is held upon the standard or supported by means of the ordinary Renewed December 3, 1914. Serial No. 875,387.

bolts or screws 4. The primary section 2 is provided with an upwardly extending threaded neck `5, which threaded neck is slidably mounted within the auxiliary section 6 of the-standard. The auxiliary-section 6 is provided upon each side with a longitudinally extending slot 7 `in which works a guide pin 8, and this guide pin passes transversely through the threaded neck 5 and by means of this pin it will be seen that the auxiliary section 6 will be held against rotation relative to the primary section 2. A locking nut 9 is threaded upon the neck 5 and is adapted to be threaded so as to bind against the lower edge vof the auxiliary section 6 and hold the auxiliary section in an adjusted position relative to the primary section 2. A head 10 is threaded upon the upper end of the auxiliary section 6, and this head is provided with a longitudinally extending slot 11 in which is pivotally mounted the hammer or sledge 12. This hammer or sledge is supported upon a link member 13, which link member is pivotally secured within the slot 11 by means of the pivot pin 14. The rear end of the hammer 12 extends rearwardly, and is connected to the primary section 15 of the hammer throwing rod by means of the link member 16. The hammer throwing rod also comprises the auxiliary section 17, and the primary and auxiliary sections are provided at their adjacent ends with a toothed surface 18 whereby the two sections may be firmly held in an adjusted relation. A clamp 19 is positioned upon the primary and auxiliary sections at their junction, and the sections are firmly clamped together by means of a thumb nut 20 for firmlyy holding the two sections in their adjusted position. The lower end of the auxiliary section 17 is provided with a head 21, which head travels within a casing 22 supported by the auxiliary section 17. A coilspring23 is positioned upon the lower end of the auxiliarv section 17 within the casing, and normally exerts a downward pressure upon the head 21 to normally force the head 21 toward the lower end of the casing22. A link rod 24 is connected to the lower end of the casing 22 by means of an enlarged head 25 which is threaded upon the upper end of the link rod 24, and the lower end of the link rod 24 is connected to the foot lever 26 as illustrated in Fig. 1.

The primary section 2 of the standard is provided with a lug 27 and upon this lug 27 is pivotally secured the foot lever 26 by means of the parallel ears 28. The foot lever 26 is provided centrally with a longitudinally extending aperture 29, and the lower end of the link rod 24 passes through this aperture and is secured to the foot lever by means of the pin 30, which pin passes through the apertures 31 formed in the foot lever A26. An upwardly extending lip 32 is formed rupon the foot lever 26 so as to limit the upward movement of the foot lever relative to the link rod 24.

The head l0 is provided with an eye 33, which eyeis threaded to receive the threaded a'rm34- This arm 34 vcarries a vcasing 35 at its outer end, and this casing 35 is provided vwith a central aperture 3'6. A plug 37 is threaded in the lower end of the aperture 36, and a plunger 38 is slidably mounted in said fplugand carries an enlarged head 39. collar 41 is carried by the plunger 3S and a 'spring 40 is interposed betweensaid collar 41 'and a shoulder 4l A'projecting inwardly from the walls of the aperture 3G just below7 the head 39. The spring thus serves to hold lthe collar 4l against the plug 37 and hence to return the plunger after each stroke olf the hammer. A iiller 42 is threaded in the upper end of the aperture 36 and is adapted tosupport the drill 43 which passes through the filler 42 andre'st upon Ithe upper head 39 ofthe plunger 38.

From the foregoing description it will be seen that L'as the foot lever 26 is depressed, the hammer will be forced upwardly so as to engage the lower end of the plunger 38 which will, of course, drive the drill or bit 43 upwardly. It will be seen that owing to the amount of leverage which is obtained by l the `mechanism set forth, a severe blow will be struck upon the lower end of the plunger 38 thereby causing the drill or bit 43 to be driven into the ceiling. It will further be seen that owing to the yieldable connection between the auxiliary and primary sections oi' the lever throwing rod the hammer will be allowed to rebound after once striking the lower end of the plunger. It will be further seen that the upwardly extending lu'g 32 not vonly constitutes a vlnean's for limiting the upward swinging 'of the foot lever 26, but also constitutes'a toe stop to ylimit the movement oi the foot upon the lever. A handle 43a may be employed `for attaching to the drill 43 whereby the drill may be conveniently inserted and removed from the drill supporting casing.

Having thus described the invention, what is claimed as new, is

A dri-lling machine of the class described comprising a primary standard and an auxiliary standard adjustably mounted thereon, a head carried by said auxiliary standard and provided with a 'slot formed therein, a link member pivotalil)7 mounted with-in said slot, a hammer for said link lmember, means associated with said link member for holding said link member within said slot and means for causing said hammer vlto be actuated.

ln testimony whereof l iliereu'irto ailix my signature in presence of vtwo witnesses.

LLOYD GARRIS'ON.

`Witnesses P. D. RANKIN, ROLLAND PHrLLiPs.

Copies of this patent may be vobtained for ve cents each, by addressing the Commissioner of Tai-tents, Washington, D. C. 

